Excavating-scraper.



No. 880,643. PATENT-ED MAR. 3-, 11908.

' J. G. FAIRBANKS.

BXOA'VATING SGRAPER.-

APPLICATION FILED SEP'1.20. 1901.

m v I vI 1 A TTOR/VE Y5 PATENTBD MAR. 3,; 1908. J. G. FAIRBANKS.

EXOAVATI-NG SGRAPER;

APPLICATION FILED SEPT. 20.1907

2 SHEETS-SHEET, 2.

To all whom it ma i, concern:

s eer TENT oriuon JAMES G. FAlRBANKs OF MARION, OHIO.

nxosvarrno-eonarnn. 1

Beit known that JAMEs G. FamBANKs, a citizen'of the United States, residing at Marion, in the county of Marion andState of Oh1o, have invented a new and useful EX- :eavatmg-Scraper, of which the following is a he so turned to' dumping position as to insure the full discharge of the load.

, shovel to A further object of the invention is to provide a scraper and scraper mounting which, when: moved to dumping position, will be completely inverted.

A still further object of the invention is to provide .a scraper or shovel in which the load or weight is imposed on the support at two different points, during the filling and dump ing operations.

, A still 'iurther object of theinvention is to provide an improved mounting" that will .lnsure the positive return of the scraper or filling'position after the dumping operation. l With these and other objects in view, as

will more fully hereinafter appear, them-- vention consists in certain novel features of construction and arrangement of parts, hereinafter fully described, illustrated in the accompanying drawings, and particularly pointed out in the appended claims, it being. understood that various changeshin the form, proportions, size and minor details of the structure maybe made without de-.

parting from the spirit or sacrificing anyof the advantages of the invention.

In the accompanying drawings :-Figur e lisaside elevation of an excavating scraper constructed and arranged in accordance W1th.the.1nvent1 on-,-the parts being shown.

in operating or load receiving position. Fig.2 isa similar view shoudngthe scraper Figs. 3 and 4 are views corres ondingto Figs. 1 and 2, re-

spectively, i l ustratinga modification of the invention.

Similar numerals of reference are employed to indicate corresponding parts throughout the-several figures of the drawings.

' ;-Theseraper 10 is of that general. typedesigned to'b'e hau'led'along the ground and-he come filled'With-dirt or other niaterialduringsuch operation, and for this purpose the haul Specification of Letters Patent. Y

. Patented. March 3,1908.

Application filed Septemher20 l907- Serial No. 393.833.

connected to a bail 12, the oppositeends of which are pivoted topins 15 projecting from the opposite sides of the scraper at points near the lower forward edge thereof.

The scraper is supported by a rope 16 to the lower end of which is secured a bail 17 that straddles the scraper, the lower ends of said bail being pivotally connected to links 18, which links are hung on trunnions 19 that project from the opposite side walls of the scraper at a point below the centerof gravity thereof, and approximately in the vertical plane of such center of gravity. I

Projecting from the opposite sides ofthe scraper at a point slightly above and to the rear of the trunnions 19 are two pins 19 which when the scraper is in excavating or loading'position rest on'the links 18, so that ,the weight is imposed on these links ata point to the rear of the vertical plane of the center of gravity-during the loading operatron.

isiastened to the front otthe scraper, while the opposite end. of said rope carries a sheave- 27, over which the hauling-rope 11 passes. During the dumping operation this rope will engage with the upper rear edge of the scraper and for this purpose a rounded rib 29-isprovided at said edgein order to prevent chafing of the rope.

' During the excavating or loading operation, the parts will assume the position shown in Figfl, the strain on the rope 22 being just sufficient to keep it taut, while the links 18 will be, in a horizontal position and the pins 19 will rest on such links. \Vhen the scraper is filled,- the rope 11 is slackened and as the weigh t of the scraper. is greatest at the forward end whenthe parts. are in the'position shown in Fig. 1, the forward end will move. down and the scraper will swing through an' .oenterof gravity ofthe scraper, an d are then ingvertical alinenrent with the ball 17. As

the scraper. moves to the dumping position, the rope 22. will be carried around over the rounded flange or shoulder 29 and the sheave Secured to the upperportion of the bail'l? ing 'rope ll is used, theiend of the rope being 2 2will be hoisted up carrying. with it, the

slackened hauling rope I 1'. \V'hen the scraper is to be restored to loading position the rope 11. is held taut, and the first result of this operationwilti-be td-lifit the bait 1-2, the latter H pivoted to the scraper-at a point below and coming into contact with the pins 19 and turning the scraper with the trunnions as a center. As the movement continues, strain will then be exerted on the sheave 27 andthe I latterwill be pulled down thus pulling upward on the rope 22 and turning the scraper back to the loading position with the pins 19" resting on the links 18.

' In the construction shown in Figs. 3 and ,4'

chains 18 are employed inplace of the links 18, and sheaves 19 are used in place of the projecting lugs 19. The operatlon is, however, the same as that previously described.

"-'-1'..- The' combination in a drag line excavator, of a scraper, a hauling member connected to the lower front portion of the same,

tILCl a support pivoted to the scraper at a point below and in the vertical plane ofthe center of gravity thereof, whereby the.

scraper is free to swing from a filling position to full inverted position for dunipin 2. The combination in a drag cavator,' of a scraper, a scraper support pivoted thereto at a point belo w the center of gravity of the scraper, and approximately in the vertical plane of such center of gravity, and a hauling member connected to sald scraper.

3. In combination, a. scraper, and a scraper carrier on which the scraper is free to turn to full inverted dumping position, a hauling member, and means associated there with for restoring the scraper to loading or excavating position v4. In combination, a scraper, a scrapercarrier pivoted thereto at apoint belowthe 5. Incombination, a scraper, a carrier pivotally connected thereto, the carrier bein formed of pivotally connected sections, 81R

,the point. of connection between the carrier and the scraper being below the center of gravity of the latter, and projections extend- ..ing from the scraper and engaging portions of the carrier to thereby impose the load on the carrier atv a point to the rear of the vertical plane of the centerof gravity of the scraper during the loading and excavating operation. p I

6. In combination, a scraper, a supporting bail, links cpnnecting. the bail to. the scraper at a point below the center of gravity of the latter, and pins extending from the scrap r at a point to the rear of the vertical plane if Iine ex-- said hauling rope;

of the latter, a auling rope connects lower forward portion of the scraper, and a.

, flexible connection operablefrom the drag-rope "for returning the scraper from dumping toloading position.

8.1 a scraperiof the class described, a carrying means pivoted to the scraper at a point below its cehter of gravity, the carrier being formed or" pivotally connected sections, a hauling bail plvotsd to the lower forward portion ofthescraper, a hauhng'rope connected to the bail, pins extendmgfronrthe opposite sides of the sore er and rest on sections of the carrier uring #he 10 g operation, and-a flexibl c nn t ng malls between the forward portion cf the scraper and the hauliii rope,*where'b'y the scraper may be name to load receivinglposition when tensional. strain 13 exerte on sand hauling rope.

9. In combination, a scraper, a scraper carrier formed of pivotally connected sections, a pair of pins projecting from the scraper and arranged to -rest on sections of. the carrier during the loadin operation, a Hauling bail pivoted to the Iower forward portion of the scraper and arranged to engage the pins during the preliminary return movement of the scraper to load receiving position, ahauling ropje connected to the bail, and a: flexib e connection extending from the forward 10; In combination, a' scraper, a carrier to which the scraper is pivoted'atapoint below and in the vertical plane'vof the center of gravity, the scraper being'free to .move to ull inverted position for dumping, a hauling rope, and a restorin ropeconnected to' the forward portion of t e scraper and operable from the hauling rope for returning the scraper to .load receiving position. I

11. In combination, a scraper, a carrier to which the scraper is pivoted at a point below and in the vertical plane of the center' of gravity, the scraper being free to move to full inverted position'for dumping, a hauling rope connected to the scraper, and a restor-Q ing ropeconnected at one end to the scraper and provided at the opposite end witli'a sheave or guide with which the hauling rope engages. g j 12. In combinat-ior, a craper, a carryingbail therefor, a she ve supported by the carrying bail, a hauling rope, a strap extend-.. ing across the upper front portion'of the scraper, the rear upper edge of the scraper having 'a. rounded rib, a restoring .rope com portion of the scraper to nected at one end to the strap and arranged my own, I have hereto affixed my signm are to bear against the rib when the scraper is in the presence of two witnesses.

inverted said rope passing around the I y she'ave, end a second sheave carried by the JAMES I AIRBAx 5 restoring rope and around which the hauling \Vitnesses:

rope extends. R. C. M COLL'UM,

Tn testimony that I claim the foregoing as 'C. W. FAIRBANKS 

